Pence, Gregory E.
A dictionary of common philosophical terms
McGraw-Hill, 2000
Buku Teks
Aristotle
Buku Teks
The facts on file dictionary of biology
edited by Elizabeth Tootill
Facts on File, 1981
Buku Referensi
McGraw-Hill dictionary of biology
edited by Sybil P. Parker
McGraw-Hill, 1986
Buku Referensi
Whittles, Keith
Concise dictionary of biology
Tiger Books International, 1994
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